function init(){
	Array.from(document.getElementsByClassName("leftMenuLi1_image")).forEach((node)=>{
		node.addEventListener("click",(event)=>{
			let ul=event.target.parentNode.nextElementSibling;
			if(ul.hidden==false){
				ul.hidden=true;
			}else{
				ul.hidden=false;
			}
			event.target.classList.toggle("image_change");
		},false);
	});
}
window.addEventListener("load",init,false);